Now when you explained me the idea I feel dumb to not figure it out myself.
Thanks mate, all clear now.
https://www.seedor.io/de-ch for purchase or DIY yourself which is what I recommend. One sec and I’ll provide a link for parts
Discussion
I’m not great w/ tools but managed it just fine without a jig. Practiced on 3/4 extra washers first. They key is a smooth form hit, not a hard hit